Home / 3,986.58-5,977.86-2,321.24

Finding the Fourth Proportional to 3,986.58, 5,977.86 and 2,321.24

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Solution

The fourth proportional to 3,986.58, 5,977.86 and 2,321.24 is: 3,480.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.58 : 5,977.86 = 2,321.24 : x
  2. Step 2: Convert to fraction form
    3,986.58/5,977.86 = 2,321.24/x
  3. Step 3: Cross multiply
    3,986.58x = 5,977.86 × 2,321.24
  4. Step 4: Simplify right side
    3,986.58x = 13,876,031.80
  5. Step 5: Solve for x
    x = 13,876,031.80/3,986.58
  6. Step 6: Final answer
    x = 3,480.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.